\n<\/p>\n
Mars ile J\u00fcpiter aras\u0131nda yer alan asteroit ku\u015fa\u011f\u0131, G\u00fcne\u015f Sistemi\u2019nin 4,6 milyar y\u0131l \u00f6nce olu\u015fumu s\u0131ras\u0131nda gezegenle\u015fememi\u015f maddelerden olu\u015fuyor.<\/p>\n
J\u00fcpiter\u2019in g\u00fc\u00e7l\u00fc \u00e7ekim etkisi, bu b\u00f6lgede kayalar\u0131n birle\u015fmesini engelleyerek \u00e7arp\u0131\u015fmalar\u0131 y\u0131k\u0131c\u0131 hale getirdi. Bug\u00fcn geriye kalan k\u00fctle, Ay\u2019\u0131n yaln\u0131zca y\u00fczde 3\u2019\u00fc kadar.<\/p>\n
Uruguay\u2019daki Universidad de la Rep\u00fablica\u2019dan Julio Fern\u00e1ndez ve ekibi, ku\u015fa\u011f\u0131n hala \u00e7arp\u0131\u015fmalara kat\u0131lan k\u0131sm\u0131n\u0131n y\u0131lda yakla\u015f\u0131k y\u00fczde 0,0088 oran\u0131nda k\u00fctle kaybetti\u011fini hesaplad\u0131. K\u00fc\u00e7\u00fck gibi g\u00f6r\u00fcnen bu oran, milyarlarca y\u0131l \u00f6l\u00e7e\u011finde devasa bir madde ak\u0131\u015f\u0131 anlam\u0131na geliyor.<\/p>\n
Ara\u015ft\u0131rmaya g\u00f6re kaybolan k\u00fctlenin y\u00fczde\u00a020\u2019si D\u00fcnya\u2019n\u0131n y\u00f6r\u00fcngesini kesebilen asteroit ve g\u00f6kta\u015flar\u0131 haline geliyor\u00a0ve bunlar zaman zaman atmosferimize girerek meteor ya\u011fmurlar\u0131na neden olabiliyor.<\/p>\n
K\u00fctlenin y\u00fczde 80\u2019i ise \u00e7arp\u0131\u015fmalarla toz haline gelerek g\u00f6ky\u00fcz\u00fcnde g\u00fcn bat\u0131m\u0131 veya do\u011fumunda g\u00f6r\u00fclen zodyak \u0131\u015f\u0131\u011f\u0131n\u0131 besliyor.
Ceres, Vesta ve Pallas gibi b\u00fcy\u00fck asteroitler bu \u00e7al\u0131\u015fmaya dahil edilmedi; \u00e7\u00fcnk\u00fc uzun s\u00fcredir stabil kalarak bu \u201ca\u015f\u0131nma s\u00fcrecine\u201d dahil olmad\u0131lar.<\/p>\n
Bilim insanlar\u0131, ge\u00e7mi\u015fe d\u00f6n\u00fck hesaplamalarda 3,5 milyar y\u0131l \u00f6nce ku\u015fa\u011f\u0131n bug\u00fcnk\u00fcnden yakla\u015f\u0131k y\u00fczde 50 daha k\u00fctleli oldu\u011funu ve \u00e7arp\u0131\u015fmalar\u0131n iki kat h\u0131zl\u0131 ya\u015fand\u0131\u011f\u0131n\u0131 ortaya koydu. Bu sonu\u00e7, Ay ve D\u00fcnya\u2019daki jeolojik kan\u0131tlarla da uyumlu: ge\u00e7mi\u015fte \u00e7ok daha yo\u011fun bir g\u00f6kta\u015f\u0131 bombard\u0131man\u0131 ya\u015fand\u0131\u011f\u0131n\u0131 g\u00f6steriyor.<\/p>\n
Uzmanlara g\u00f6re asteroit ku\u015fa\u011f\u0131, d\u00fc\u015f\u00fcn\u00fcld\u00fc\u011f\u00fc gibi kal\u0131c\u0131 ve dura\u011fan de\u011fil; milyarlarca y\u0131ld\u0131r k\u00fctle kaybeden dinamik bir yap\u0131. Bu s\u00fcreci anlamak, D\u00fcnya\u2019n\u0131n ge\u00e7mi\u015fteki \u00e7arp\u0131\u015fma tarihini ayd\u0131nlatman\u0131n yan\u0131 s\u0131ra gelecekteki g\u00f6kta\u015f\u0131 risklerini de de\u011ferlendirmemize yard\u0131mc\u0131 oluyor.<\/p>\n<\/div>\n